#Cairo canvas. The following variables are available:
# * CNTX: A reference to the current cairo context object
# * W: Canvas width
# * H: Canvas height
# Have fun!
CNTX.move_to( W/4, 2*H/3 )
CNTX.rel_line_to( 0, -H/3 )
CNTX.rel_line_to( W/4, H/6 )
CNTX.rel_line_to( W/4, -H/6 )
CNTX.rel_line_to( 0, H/3 )
CNTX.stroke()